Electrical apparatus.



J. SC-HMIDINGER.

ELECTRICAL APPARATUS.

APPLICATION FILED OCT-25.1916.

Smut/14407,

Patented June 5, 1917.

2 SHEETS-SHEET l J. SCHMIDINGER.

ELECTRICAL APPARATUS.

APPLICATION FILED 00125; 1916.

Patented J 11110 5, 1917.

2 SHEETS-SHEET 2.

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nLncrnIoAL arrnna'rus.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed October 25, 1916. Serial No. 127,675.

To aZZ whom it may concern:

Be it known that I, J osnrn SoHMmmoER, a subject of the Emperor of Austria, residing 'at New York, in the county of Bronx and State of New York, have invented certain new and useful. Improvements in Electrical Apparatus, of which the following is a full, clear, and exact specification.

This invention relates to electrical apparatus, and has for its object to provide an electric motor with improved means for interchangeably attaching thereto any one of a number of different implements, whereby a household may be equipped with a variety of electrical appliances, such as heating and cooling fans, polishing tools and vibrators, at small expense inasmuch as it is only necessary to purchase a single motor to which the various implements may be attached and by which they may be operated as desired. Special objects areto provide an improved coupling for connecting up the armature shaft of a motor with the shaft of any one ofa multiplicity of implements such as above mentioned, to supply suitable means for supporting said implements with their shafts in proper alinement with the armature shaft of the motor so as to reduce friction and vibration, and to prevent the implement attached to the motor from becoming accidentally disconnected therefrom while the motor is. running, thereby avoiding accidents and insuring the satisfactory operation of the implement. Other objects will appear as the description proceeds.

The invention will be first hereinafter described in connection with the accompanying drawings, which constitute part of this specification, and then more specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views: i

Figure 1 is a broken detailed side view of a motor showing the coupling and means for locking the sliding carriage in detail, the position of the motor when moved back so as to permit an implement to be attached to its supporting bracket being indicated in dotted lines. I

Fig. 2 is a rear end view of the carriage locking device.

Fig. 3 is an inner end view of the coupling member carried by the implement.

Fig. 4 is a sectional view on the line V-V of Fig. 1, showing the means for loosely supporting the shaft of the' implement in the tubular portion'of its bracket. F1g. 5 is a detailed side .view of a cooling fan with its coupling shown partly in section.

Fig. 6 is a similar view of a polishing tool, and

Fig. 7 is a similar View of a vibrator. The motor l is mounted on a carriage or plate 2 fitted to slide axially between guides 3 on-the stand 4 which may beof any desired formation. The carriage 2 normally abuts at its front end against a stop lug-.- 5 and is locked in this position by a finger 6 carried by a trigger 7 and extending up through a passage 8 in an'extensicn 9 of the stand 4:. The trigger 7 is pivoted to the stand at 10 and is yieldingly held with its finger 6 projecting through the'passage 8 into engagement with the rear end of the carriage 2, as shown in solid lines in Fig. l, by means of a springll. The free end of the trigger 7 projects beyond the extension 9 so that -it may be easily grasped and depressed for withdrawing the finger 6 from the path of the carriage 2, thereby permitting said carriage to be moved rearwardly, as shown in dotted lines in Fig. 1.

This rearward movement of the motor is for the purpose of temporarily displacing the coupling member or clutch 12, which is mounted on the armature shaft, to permit the coupling bracket 13 of an implement to front of the guides 3 for the carriage 2 and terminates in a forwardly extending elongated knob 15 having parallel grooves 16 at its Opposite sides. The bracket 13 of the implement comprises a tubular portion 17 in which the coupling member or clutch 18 of the implement is loosely carried, and a bifurcated depending portion 19 adapted to embrace the knob15 of the bracket arm 14. Said depending portion 19 has rearwardly extending lateral ribs 20 to overlap and fit against the upper end of the bracket'arm 14 toaid in holding the bracket 13 of the implement -tirmly'on the bracket arm 14 against lateral-movement. One of the clutch members 12 or 18 is provided with a projecting axial pin and the other clutch member has a corresponding axial socket to receive said pin when said clutch members are engaged with one another, as shown in solid lines in Fig. 1. In this embodiment of the .of the bracket 13 invention the projecting pin 21 is an extension of the armature shaft of the motor, and the socket 22 to receive said pin is formed in the clutch member 18 of the implement, but it will be understood that this arrangement, may be reversed if desired. Because of the interlocking of the pin 21 with the socket 22, it is obvious that the motor must be moved rearwardly, as indicated in dotted lines in Fig. 1, before the bifurcated depending portion 19 of the bracket on which the implement is mounted may be engaged with or disengaged from the bracket arm 14 of the motor stand inasinto enga ement with the slots 16 in the knob. 15, the ribs 20 being engaged with the sides of the upper end portion of the bracket 'arm 14 at the same time. The bracket 13 will be held down in proper position on the f bracket arm 1 1- by gravity and when so connected thereto will bring the coupling 18 of the implement into alinement with the coupling member 12 of the motor, so'that when the motor is moved forward again into "the position shown in solid lines in Fig. 1,

the pin 21 will enter the socket 22 and the clutch members 12 and 18 will be interlocked.

The clutch members may be of any suitable construction. As illustrated, each clutch member has two axially extending spurs 23 each having a straight edge 2 1 at one side and a beveled edge 25 at the other side, the spurs of one clutch member being adapted to it in the spaces between the spurs of the other clutch member, as will be-readily understood. The driving is done, of course, through the abutting straight edges 2 1 of the clutch members.

The clutch member18 of the implement is loosely held centrally of the tubular portion 17 of the bracket 13 by means of a ring 26 fitted loosely in a groove 27 in said clutch member and having diametrically opposite extensions 28 connected to said tubular portion 17. As illustrated best in Figs. 3 and 4, the ring 26 and extensions 28 are formed of two metal straps each having its middle portion bent into semi-circular form to embrace ,one-half of the clutch member 18, while the end portions of said straps are passed through the tubular portion 1'1 and bent over upon the outer face thereof, as at 29. Because of the fixed connection of the bearing ring 26 with the tubular portion 17 of the bracket 13, it will be held against rotation' while the clutch member 18 rotates freely therein when driven by the clutch member on the'motor armature. The bearing ring26 further serves to lock the clutch member 18 in the tubular portion 17 of the bracket 13, so that there is no danger of these parts becoming separated when the appliance is detached from the motor.

In Fig. 5, an ordinary rotary fan 16 is shown equipped with the coupling bracket 13 having the depending bifurcated portion 19, and with the clutch member 18 loosely held in the tubular portion 17 of said bracket 13 by means of the ,bearingring 26.

It will be readily understood from the foregoing description'how this cooling fan 46 may be attached to the motor. The same applies to the use of. a polishing tool 17 shown in Fig. 6, and the vibrator d8, shown in Fig. 7, each of these implements being equipped with coupling members similar to that on the fan 46. The vibrator 48 issupported ona handle 49 at the end of a flexible shaft 50 which is provided with an extra bearing collar 51 held in rigidly spaced relation to the'tubular portion 17 of the bracket 18 by one or more rigid strips 52. Various other implements besides those shown in the drawings may also be equipped with couplings of the kind described so that they may be used interchangeably with the motor. The owner of one of the motors may, therefore, acquire a great variety of implements to be attached thereto at a small expense.

. Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. The combination with a stand having a bracket arm, of a motor on the stand, an implement-carrying bracket having sliding connection with said bracket arm, and telescoping clutch members one carried by the motor and the other by said bracket for operating the implement by means of the motor, said motor being movable on the stand transversely to the path of movepiiedllit of the bracket, for the purpose speci- 2. The combination with a stand having a bracket arm, of a motor on the stand, an implement-carrying bracket having sliding connection with said bracket arm, and telescoping clutch members one carried by the motor and-the other by said bracket for operating the implement by means of the motor, said motor being movable on the stand transversely to the path of movement of the bracket, forthe purpose specified, and means for locking the motor in the position where the clutch members are engaged.

3. The combination with a stand having a bracket arm provided with grooves, of a motor on the stand, an implement-carrying bracket having a bifurcated portionto slidingly engage said grooves, and telescoping clutch members one carried by the motor and the other by said bracket for actuating the implement by means ofthemotor, said motor being adapted to slide transversely to the-movement of the bracket ghzing said grooves, for the purpose specie 4. The combination with a stand having parallel guides, of an implement-carrying bracket slidingly connected to said stand, a carriage slidingly mounted between said guides and movable transversely to the path of movement of the'bracket, a motor on said carriage, interengaging clutch members one carried by the motor and-the other by the bracket for operating the. implement by means of the motor, a stop on the stand for limiting the movementof the carriage in one direction, and a spring-pressed trigger for engagingjthe other end of the carriage when the same is in contact with said stop.

5. The combination with a stand having a bracket arm, of a motor movably mounted f on the stand, an implement-carrying bracket to detachably connect with said bracket arm when the motor is in one position, and supplemental clutch members, one carried by the motor and the other connected to an implement and mounted in said bracket, said clutch members being'engaged when the motor is .in another position, for actuating the implement by means of the motor. Q I

6. The combination'with a stand having a bracket arm provided with grooves, of a motor movably mounted on the stand, an

implement-carrying bracket having a bifurcated portion .to be slidingly engaged with said grooves, when the motor is in one position, and supplemental clutch memrs, one carried by the motor and the other connected to an implement and mounted in the bracket, said clutch members being engaged when-the motor is in another position, for actuating the implement by means of the motor.

7. The combination with a stand having a bracket arm provided with grooves, of a motor movably mounted on the stand, an implement-carrying bracket having a bifurcated portion to be slidingly engaged with said grooves when the motor is in one position, said bifurcated portion having lateral ribs to engage the sides of said bracket arm, and supplemental clutch members,one carried by the motor and the other connected to an implement and mounted in the bracket, said clutch members being engaged Y when the motor is in another position, for

actuating the implement by means of the motor. 7

8. The combination with a stand having a bracket arm, of a motor movably mounted on the stand, an implement-carrying bracket a bracket arm,

'a ring loosely fitted to-slidingly connect with said'bracket arm 7 ment and mounted in the bracket, said clutch members being engaged when the motor is in another position, for actuating the implement by means of the motor, one of said clutch members having a socket, and'a projecting pin on the other clutchmember engaging said socket whereby the bracket is locked on the bracket arm when the clutch members are in driving connection.

9. The combination with a stand having a bracket arm, of a motor movably mounted on the stand, an implement-carrying bracket to sliding'ly connect with the bracket arm when the motor is in one position, said implement-carrying bracket having a tubular portion arrangedtransyersely to the path of movement of the bracket, a clutch member'in said tubular portion of the bracket, and a supplemental'clutch member on the motor adapted to extend into said tubular portion of the bracket for engagement with the clutch member therein when the motor is in another position.

10. The combination with a stand having of a motor movably mountedv on the stand, an implement-carry' bracket to detachably connect bracket arm when the motor is in one osition, said having a tubular portion, a clutch member attached to the implement, means for loosely supporting said clutch member in said tubular portion of the bracket for permitting the free rotation thereof but limiting its axial movement, and a supplemental clutch member carried by the motor and adapted to engage the first clutch member when the motor is in another position, for operating the'implement by means ofthe motor.

with the implement-carrying brac t 11. The combination with a stand having 7 implement and having an annular groove, insaid groove, means for fastening the ring innthe tubular portionv of the bracket clutch member loosely its axial movement, and a supplemental clutch member on the motor adapted to en= gage the first clutch member when the motherein and limiting tor is in another position, for operating the implement by means of the motor. In testimony whereof I have signed my name to this specification.

JOSEPH SGDINGER.

for supporting said 

